This paper examines the "ecological validity" of a randomized controlled trial (RCT) conducted in 42 high schools to measure the impact of a content literacy program. This study of comparable schools implementing the same program in different contexts highlights characteristics that are often not attended to in rigorous effectiveness…

The purposes of this study were to (a) investigate the efficacy of a core fraction intervention program on understanding and calculation skill and (b) isolate the effects of different forms of fraction word-problem (WP) intervention delivered as part of the larger program. At-risk 4th graders (n = 213) were randomly assigned at the individual…

Vocabulary has always been one of the significant issues that affect the English language learning and teaching. The current study aims to improve primary stage pupils' EFL vocabulary learning and retention skills through using mnemonics. Sixty four 6th grade primary school pupils were randomly assigned into experimental and control groups. The…

This research presents an experimental study to determine to what extent computer skill learners can benefit from generating self-explanation with the aid of different computer-based visualization technologies. Self-explanation was stimulated with dynamic visualization (Screencast), static visualization (Screenshot), or verbal instructions only,…

A common assumption in meta-analysis is that effect sizes are independent. When correlated effect sizes are analyzed using traditional univariate techniques, this assumption is violated. This research assesses the impact of dependence arising from treatment-control studies with multiple endpoints on homogeneity measures "Q" and…

From early in development, humans have strong prosocial tendencies. Much research has documented young children's propensity to help others achieve their unfulfilled goals toward physical objects. Yet many of our most common and important goals are social--directed toward other people. Here we demonstrate that children are also inclined, and able,…

This investigation aimed to establish retrospective time judgments as markers of internal context change across 2 memory paradigms, the effects of which have been attributed to internal context change by some researchers. Experiment 1 involved the list-method directed forgetting paradigm and established that the forget group significantly…

American colleges and universities have an expanding role to play in nurturing political engagement as more youth attend college. Given low voter turnout among college students yet growing experimental evidence that face-to-face mobilization can boost turnout, the experiment reported in this article examined the impact of a face-to-face college…

Background: Gesticulation (gestures accompanying speech) and pantomime (gestures in the absence of speech) can each be comprehensible. Little is known about the differences between these two gesture modes in people with aphasia. Aims: To discover whether there are differences in the communicative use of gesticulation and pantomime in QH, a person…

This study investigated the impact of structuring and problematizing scaffolding mechanisms on 240 Iranian English as a foreign language learners' individual and socially shared metacognition in writing skills. The study also sought to find out whether the learners' proficiency level moderated the effect of the scaffolding mechanisms on…

Hospitality students are required to be able to address challenging cases or problems in the work environment. However, traditional lecture- or exam-based instruction leaves a gap between theory and practice. On the other hand, modern youth live and socialise in an increasingly digital environment, and one of their biggest pastimes is playing…

Background: Community health worker (CHW) interventions are known to be an effective strategy to improve health behaviors and outcomes in relation to diabetes, particularly for racial/ethnic communities. Although understanding the function of identity with same race/ethnicity among clients of CHW interventions could contribute to more effective…

This study investigated the effect of learning cycle constructivist-based approach on secondary schools students' academic achievement and their attitude towards chemistry. The design used was a pre-test, post-test non randomized control group quasi experimental research design. The design consisted of two instructional groups (learning cycle…

Students' writing problems are a global educational concern and is in need of particular attention. This study aims to examine the impact of providing extra writing opportunities (i.e., writing journals) on the quality of writing compositions. A longitudinal cluster-randomized controlled design using a multilevel modeling analysis with 182 fourth…

This study examined the effects of a sexual health curriculum developed for school psychological counsellors in Turkey on the sexual health knowledge of the participating candidates, their beliefs in sexual myths and their tendencies towards ambivalent sexism and sexism in romantic relationships. The study adopted a semi-experimental design. Study…